20974803

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{53}}^2\times {\mathrm{131}}^1$

素因数の和:259

約数の個数: 24

約数和(自身を含む): 30233280

約数和(自身を除く): 9258477

約数列:

[1, 3, 19, 53, 57, 131, 159, 393, 1007, 2489, 2809, 3021, 6943, 7467, 8427, 20829, 53371, 131917, 160113, 367979, 395751, 1103937, 6991601, 20974803]

約数ペア:

[(1, 20974803), (3, 6991601), (19, 1103937), (53, 395751), (57, 367979), (131, 160113), (159, 131917), (393, 53371), (1007, 20829), (2489, 8427), (2809, 7467), (3021, 6943)]